Eighty Years to a Name: How an mtDNA Project Helped Identify the Unknown Sailor of HMAS Sydney (II)
A chance connection through a Group Project helped identify an unknown WWII sailor after 80 years using an mtDNA haplogroup.
The World’s Largest Y-DNA Haplotree
FamilyTreeDNA’s Y-DNA haplotree includes over 100,000 branches and 855,000 variants — the most detailed paternal ancestry map in the world. Each month, we update this post with the latest growth stats, haplogroup insights, and tools to help you explore your place in history.
Understanding mtDNA Haplogroups and Your Results
Learn how mtDNA haplogroups are named and how to interpret your mtDNA results to trace your direct maternal ancestry.
What Is Mitochondrial DNA (mtDNA)? Explained Simply
What can mitochondrial DNA tell you about your ancestry? Learn how mtDNA is inherited and how it helps trace your maternal line.
How to Use mtDNA for Genealogy Research
Learn how mtDNA can help you trace your maternal line, confirm relationships, and uncover ancestors when traditional records fall short.
Tips and Resources for Using mtDNA Testing For Genealogy
Learn how to use mtDNA results with practical tips, tools, and strategies to trace your maternal ancestry and improve your genealogy research.
How Mitochondrial DNA Testing Works
Discover how mitochondrial DNA testing works and how your mtDNA is analyzed to identify matches, determine haplogroups, and trace maternal ancestry.
The World’s Largest mtDNA Haplotree
A detailed look at the world’s largest mtDNA haplotree, how it continues to grow and refine, and what recent updates reveal about maternal ancestry and population history.
Tips for Using Autosomal DNA Effectively
Not sure what to do with your DNA results? Learn how to analyze DNA matches and make meaningful progress in your family history research.
How to Upload Autosomal DNA to FamilyTreeDNA
Learn how to upload your autosomal DNA from other testing companies to access new matches, tools, and insights in the FamilyTreeDNA database.